Drafting unit



T. HARRIS DRAFTING UNIT Jan. 9, 1940.

Filed Feb. 26, 1937 'INVENTOR' 7% omas fin r126- ATTORNEYS.

Patented Jan. 9, 1940.

,1 .7 I D 7 TATES DRAFTINGUNIT 'ThomasHarri's; Providence," R. L, a' ssignor to Harris Textile Machinery Corporation, ajcor- Z porati'on of :Rhode Island Application February 26,1937, Serial [No.-1 27,890

' -'3 Claims. (cue-+141)- This inventionrelates to a drafting'unit such roll does not rotate to cause a, collection oflint or fibers which may drop inwardly along the edge of the roll.

Another object of the invention is the provid- Y s plished:

ing'of a mounting for a spinning roll which will 16 maintain the roll in position against axial shift-* 7 and 8 relate to the driven roll which is desiging, shifting being governed purely byvany transverse motion which is given by the mounting of g the roll. I Another object of the invention is the provision of a mounting which may be readily replenished or a new mounting substituted and'yet one which; is of-simple construction and easily positionable in the mechanism. 9 Y I Withthese and other objectsin view, the invention consists of certain novel features of-construction, as will be more fully described, and particularlypointed out in the appended claims.

Fig. 3 is a sectional view on line 33 of Fig. ,1;

, Fig. ,4 is a sectional View through one ofthe rolls and its mounting;

Fig. 5 is a sectional view. through the roll shown in Fig. 4 with the bushings and axle upon which it is mounted removed; 3 v

Fig. 6 is a perspective view or the mounting pin which is shown in Fig. 4;

Fig. '7 is a perspective view of one of the bushings shown in Fig. 4; v Fig. 8 is aperspective view ofthe spring ring which locks'the pin of Fig. 6 in place;

Fig. 9 is a'perspe'ctive view of. the mounting.

member for the roll shown in Fig. 3.

In the use of spinning units such as illustrated in my Patent #l,922,949 when some sorts of Work are passing through the machine where the fly 5 or lint from the work is prevalent, this lint will drop in between the roll anclitsmounting and where this lint contacts a moving point will cause an accumulation to be built up and in order to' avoid this accumulation of material I have pro-' 5 vided that the support for the roll be stationary so that any-jlint droppingupon this support will not be wound up to enhance its accumulation-in the device. The mounting for one of the rolls re- I quires adriving connection withthe roll whereas 7 the mounting for the-other roll requires no such. 5

driving'connection, and accordingly l have caused the mounting for the drive v and the driven. rous to be somewhatdifierent althoughboth embody :the samegeneral;underlying;thought and .principle, and the following is a more detailed de- 10 scription of the present embodiment of this invention, illustrating the preferred means by which these advantageous results may be accom- With reference tothe drawing, Figs. 2, 4 5, 6, '1, 15

nated it! and is illustrated as being of metal with a fluted working surface I I, and end surfaces designated generally [2, which have a step formation i3 providing a narrower working face I I than 20 the bearing portion 14 adjacent the axis. There is also provided an axial bore I5 into which there are forced bushings I6 from the opposite ends .12, these bushings fitting tightly within the bore i and leaving a space H between them into which 25 there fits a spring ring I8.

A pin l9 extends through these bushings and is rotatably mounted therein,'.this pin being provided with an annular groove 20 which receives the spring ring l8 to lock this pin against axial movement.

The pin 89 is provided with fiat portions 2| on so opposite sides of each end which are received" within the slot 22 in a carriage 23 in the unit designated generally 24. This carriage 23 is urged by means of a spring 25 about apivot 26 to move the driven roll Iii toward the drive roll,

, 23. It will thus be seen that the pin 19 extends from a point inwardly of the roll It) to a point outwardly thereof and that this pin is non-rotat-:

- able so that any lint dropping inwardly along the end surfaces [2 of the roll will not be wound up to matxand excessively accumulate thereon.-

cessed'as at 33 concentric with the axial bore 32. 45

A shaft 34is corrugated as at and has a driven fit with the bore 32 so as to fixedly mount theroll 28 upon this shaft 34. Bearing members designated generally 35 shown in perspective in Fig; v 9 are provided with flange portions 36 to fit withg in the recesses 33 and provide a bearing for the '0 roll. Formedinte gral with each of the 'fianges 36 is a rectangular body portion 31 which is rev ceived within a correspondingly shaped-socket of a mounting member 38 in the unit 24 and is 5 held against rotation in this mounting. Each member is also provided with a bore 39 to receive and provide a bearing for the shaft 34 on either side as it extends beyond the roll 28. This shaft is driven through the worm gear 40 which is fixed upon the smaller portion 4| of the shaft 34, and the worm 42 mounted in the unit 24 and driven in a desired manner.

From the above it will be apparentthat any lint dropping along the end surface of the roll 28 will engage the non-rotatable bearing 35 and be prevented from being wound up, mattedand excessively accumulated, this hearing extending from a point inwardly from the end surface to a point outwardly therefrom for this purpose.

The foregoing description is directed solely toward the construction illustrated, but I desire it to be understood that I reserve the privilege of resorting to all the mechanical changes to which the device is susceptible, the invention being defined and' limited only by the terms of the appended claims.

I claim:

1. In a spinning unit, a spinning roll, an axle fixed thereto to rotate therewith, saidroll having recesses in its opposite ends with hearing surfaces having the axis of the roll as a center, nonrotatable members in said recesses having a loose fit on said axle providing a bearing for the roll and also having a bore providing a bearing for the axle fixed to said roll, and means on said axle for driving the same.

2. In a spinning unit, a spinning roll, an axle fixed thereto to rotate therewith, said roll having recesses in its opposite ends with bearing surfaces having the axis of the roll as a center, non-rotatable members having a loose fit on said axle and each provided with a bore forming a bearing for the axle and provided with a flange to extend into said recesses and provide a bearing for the roll, and means on said axle for driving the same.

3. In a spinning "unit, a short hollow spinning roll, an axle fixed thereto to rotate therewith,

said axle being of greater length than the roll to provide axle extensions at each side thereof, said roll having recesses in its opposite ends with bearing surfaces having the axis of the roll as a center, non-rotatable members having a loose fit on said axle and each provided with a bore forming a bearing for the axle extensions and provided witha flange to extend into said recesses and provide a bearing'for the roll, and means on said axle for driving the same, said flange being thicker than the depth of said recess and protruding outwardly beyond the end of the roll.

THOMAS HARRIS. 

